How about China Broadcasting Network? You can talk about everything you have used.

Medium-width network is rubbish. I am a user of Ningyuan, Yongzhou City, Hunan Province. Their network disconnection is a common occurrence, and the follow-up service can't keep up. What is exasperating is that no one cares after the network failure, and the staff actually said that it is normal to disconnect the network. There is definitely a risk of disconnection when using the network. What is even more exasperating is that I told Unicom's customer service phone number once, and Tietong's customer service phone number once, falsely claiming that it was its subordinate unit, and asked me to call this number for repair. When I saw the words "Zhongkuan Wang", I wanted to call names.